My Wife's Sister [MF] | 2016

My wife Brittany called and asked if her sister, Amber, could stay with us while her and her husband worked through some things. I wasn't really thrilled with the idea but I couldn't say no to my wife. I was working from home and started to pick up the house when I heard a knock and was surprised to already see Amber. She looked visibly upset and I could tell she had been crying so I gave her a hug and told her to take the extra bedroom and let me know if she needed anything. I finished picking up the house, set out some burgers for dinner and went upstairs to finish my work day. Brittany called again and said she wouldn't be home til at least 8 and that I should go ahead and do dinner without her. I knocked on Amber's door and told her Brittany wasn't coming home til later and I was going to cook some burgers. She came right out and I told her I would fix us some drinks while I waited for the grill to warm up.
I whipped up my best margaritas and we hung out by the pool while the burgers cooked. I was doing my best to be nice and try to keep her mind off her husband. Amber and I had never really hung out by ourselves and it was actually pretty enjoyable. I was always kind of intimated of her because of her looks. She is a tall long legged brunette with dark skin and a killer body. Amber downed a couple margaritas pretty quick and I could tell she was feeling pretty good. We ate dinner outside and we talked the entire time. At first the conversation was pretty bland but the more drinks we had the more Amber wanted to talk about Brittany and I's sex life. I told her things were good we always satisfy each other but after 7 years I guess the sparks don't really fly like they used to. She kind of smirked and went back to her dinner. After we ate Amber wanted to go for a swim so we went and changed into our bathing suits. Amber came out in a small blue bikini and I was honestly worried about what my wife was going to say when she got home and saw Amber wearing it. I think Amber wanted to show off her body, she looked like she could be on the cover of a fitness magazine. She was diving and swimming laps while I was just laying on the stairs enjoying the view. She came up to me and playfully tackled me and then sat right next to me with her arm around me and breast touching my side. She said "Thank you so much for tonight, this is the best I have felt in months it's so nice for you to take the time to talk to me and cook for me." I gave her a hug and kiss on the cheek and tried to hide my semi hard cock in my bathing suit. I couldn't help it watching this incredible lady walking around in her little bikini.
I went inside to dry off right when Brittany showed up. She said hi and went to find Amber who was still in her blue bikini. Brittany hugged her and they sat outside and talked for another hour or so while I showered and checked my emails to make sure I was ready for the morning. I had nothing real pressing it was my slow time of the year so I set my alarm for 8 and called it a night. I woke up to my wife getting ready and leaving about 7 and I fell right back asleep. My alarm went off but I was in a lazy mood and I turned it off and went back to sleep. I thought I heard the door open but I knew Brittany had left and just thought it was Amber in the kitchen or something. I felt a hand going down my stomach and wake up to see Amber standing in front of me with nothing but a red bra and thong on! I sat up and she put her hand over my mouth and said "Just relax Brad, I saw you watching me yesterday at the pool, we both need this." There was no need to convince me, Amber's DD tits were perfectly framed in the sexiest lingerie I had ever seen and her ass looked even better in the thong she had on. She unzipped my pants and took out my cock. She stroked it a few times, then leaned over and took my cock in between her soft wet lips. She started bobbing on my cock. Her tongue was everywhere. I loved the blowjob she was giving me but I was ready to fuck Amber. I reached down for her head and started kissing her neck all the way down to her pussy. I ripped the thong she had on off as she took off her bra to reveal the best tits I have ever seen. I shoved my face in them as she let out a soft moan. She laid me back again and slowly lowered herself onto my hard cock. She was so tight I could barely hold back cumming instantly. She started to slowly ride my cock as her tits were bouncing everywhere. She rode me faster and faster and started screaming "Oh Brad Oh Brad fuck me fuck me." I could feel her pent up emotions release as she came. I quickly pulled out of her and she instantly swallowed my cock to finish me. I came all over her and she licked the last of it off of my cock. She laid down beside me and whispered in my ear "Don't worry about Brittany I promise she will never find out, I just wanted to repay you for last night and letting me stay here." She got up and got in our shower as I washed up and made us some breakfast. As I sat down to eat breakfast with Amber I couldn't believe I just cheated on my wife with her little sister but I was looking forward to more.